How is the photostability of high-pressure lubricating oil hydrogenation products controlled?
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This post was last edited by zhuyitou8 on 2016-12-2 at 17:23. How is the photostability of high-pressure lubricating oil hydrogenation products controlled?
Olefins affect light stability; controlling the olefin content is sufficient, for example by increasing the degree of reaction to saturate the olefins
Any unsaturated hydrocarbon will affect light stability. In my opinion, if the sulfur and nitrogen content is below 5, it is feasible to adjust the temperature of the refining stage accordingly; within the design parameters of the plant, increasing the hydrogen partial pressure is another approach.
The photostability of high-pressure lubricating oil hydrogenation units is primarily determined by the properties of the catalyst after reprocessing, as well as the reaction temperature during that reprocessing process. It is also influenced by the aromatic content in the base oil used for lubricants. The main purpose of reprocessing is to saturate the aromatics; keeping their content below 1% ensures that there are no issues with photostability.